Japanese Era Converter

Summary

Japan's official calendar uses imperial era names tied to each emperor's reign. This tool converts any year in the Reiwa, Heisei, Showa, Taisho, or Meiji era to its Gregorian equivalent and back. Useful for interpreting Japanese documents, historical records, and date stamps that use the era-based wareki system.

How it works

1. Choose a conversion direction: Gregorian to Japanese era, or Japanese era to Gregorian.
2. For Gregorian input, enter a year between 1868 and the present.
3. For era input, select the era name and enter the year within that era.
4. The converter instantly shows the equivalent date in the target system.
5. Switch direction at any time to convert the result back.

Use cases

• Translate Japanese official documents that use era-based dates.
• Convert historical Japanese dates for genealogy or research.
• Verify era year boundaries when working with Japanese records.
• Understand Japanese date stamps on products, certificates, and passports.
• Cross-reference Showa or Heisei years with Western history timelines.
• Calculate how many Gregorian years an era spans.

Frequently Asked Questions